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Finding the Fourth Proportional to 328,696.55, 493,108.76 and 126,277.91

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Solution

The fourth proportional to 328,696.55, 493,108.76 and 126,277.91 is: 189,441.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,696.55 : 493,108.76 = 126,277.91 : x
  2. Step 2: Convert to fraction form
    328,696.55/493,108.76 = 126,277.91/x
  3. Step 3: Cross multiply
    328,696.55x = 493,108.76 × 126,277.91
  4. Step 4: Simplify right side
    328,696.55x = 62,268,743,615.49
  5. Step 5: Solve for x
    x = 62,268,743,615.49/328,696.55
  6. Step 6: Final answer
    x = 189,441.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.